found in the Naica Mine, Chihuahua, Mexico.These are Selenite crystals & are the largest crystals ever discovered.They were hydrothermal fluids emanating from magma chambers below.
u don't nessasarily need to watch this all the way though but on pause it at 4:46 a floating shadow can be seen 5:09 a man/figure can be clearly seen when the camera goes back a mere seconde later the man/firgure is gone